Improvement in combined batch and lock



THEOPHILUS WEAVER., or HARRISBRG, rENNsYLvANraAssI-cuon rro J. W. MOFFITT, OF SAME PLACE.

Letters Patent No. 96,175,

dated October 26, 1869.

IMPROVEMENT IN COMBINED LATCH AND LOCK.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern.

' Be it known that I, THEoPHILUs WEAVER, of the city of Harrisburg, county of Dauphin, and State of Pennsylvania, have invented-a new and useful Iulprovement on a Latch-Lock; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation oi' the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure lis a plan of the lock unlocked, and as a knob-latch.

Figure 2 Ais a plan of the lock locked.

Figures 3, 4, and 5 are views of the sectional keeper.

Figure 6 is a' plan of the knob and key-escutcheon.

Figure 7 is a side view of the knob-spindle.

The nature of my improved lock is such as to constitute it a cheap, simple, and etcient indoor-lock for cupboards, clothes-presses, cases, window-cash, 85e., whose bolt is a lock-bolt or latch at pleasure.

It consists chiefly of aswinging-lever, and a traversing spring-retaining yoke, arranged for knob-attachlnent in a suitable case.

The swinging-lever A B D, figs. 1 and 2, has trunnions at M, which have bearings in the shells of the case, a short arm, O, notched to receive loosely the actuating tooth 1 of arbor Z, and a long looped arm, B F, which has a bolt-head, A, for engaging with thel keeper outside of the case edge.

'Said head is surlnounted by a crown -piece, H', which closes the passage in the case-wall necessary forthe clearance of it, when it is vibrated in latching.

Said'bolt-.head A is located in aprojected nosing of .the case, and this is so made to bring or keep the knoband key at a proper distance from the door-edge without enlarging the whole lock-body.

The arm otsaid lever from A to M takes the inside line of the said nosing.r

Said long looped arm retreats from bolt-head Atoward vthe centre of the lock-case, where. it forms an abrupt det-our at B, leaving a space between shoulder B and the central screw-post C D, sufficiently large for clearance of said shoulder B, when t-he lever is vibrate'd in latching.

Said arm returns, at the rear of post G D, to its main line,- to form a spiral spring-support, a, of as great throw as possible between it and the foot of the traversing yoke, which supports the other end of the spring, and in such relative direction are said supports placed that said spring may be as near as possible in the chord-line E S w of the arc, which the arm-end E describes.

Said long arin is stopped both ways by post C D in the loop betweenI B and F.

The traversing spring-retaining yoke has a rec` tangular locking-head, L, fi gs. l and 2, on a` bar, which terminates in two curved arms N and Y on opposite Said head L is so formed on the end of its bar as to enter into its place in locking like a'slightly-tapering wedge, and to fall sufficiently deep to make the locked position secure and rattle-prooi'.

The curved arm N is so formed that the key-bit will play freely between N and L without requiring it to be returned after it has locked or unlocked the lock, to remove it from the lock, while at thesame time it has an inside ledge, 3, so near the key-hole K` that th'e key-bit acts on it in lifting and carrying the yokel from the locked to the unlocked position, and rice versa, as shown in gs. 1 and 2.

The spring-carrier arm Y basa foot, on which is a pin, w, for the support of the spiral spring S in such relative direction as to clear arbor Z, to keep iu the chord-lim- E S w, as described, and to poise the yoke when it is lifted with the key-bit at 3.

The yoke is styled traversing, -because it is neither pivoted nor fixed as tumblersare, but it swings and walks when acted upon by the key,bit, the spring, and

the knob..

When the lock is unlocked, the yoke is kept poised on post C D, by the tension of 'the spring, and when locked 'is-kept locked by the same tension. The lock,`

of doors, as the bolt-head must be kept on' the inside of the jamb, that is, on the plane ot the inside of the door, when it is closed.

- It consists of two sliding dovetailed plates, as shown, separated in figs. 3 and 4, and combined in iig. 5.

The plate in fig. 3 is formed with a ledge or tread, r, on its three sides, and has two screw-seats 4 and 5, near the end ledges, land a little ont of the middle toward the unledged side. f

"The blade or plate, fig. 4, ts loosely into recess of plate, fig. 3, and has its sides cut at 6, to pass the screws in the other plate, while two lugs, 7, serveto stop plate, iig. 4, when it is slid out full length'required, the latter also having a strong ledge, 8, to strengthen the nip for the bolt. l

The two plates are applied, as shown in fig. 5.

Plate H is under and is clamped against the jamb by the screws in the other plate.

The knob and key-escutcheonare east in one piece, as shownin tig. 6. The knob-cavity oor has a slot, 1*, in it, for the insertion of the lug 1?2 on the spindle, shown in fig. 7.v Said lug is cast on spindle A2, and thus obviates the necessity of drilling a hole and plugging it, as is usually done.

The eseutvcheon is iirstnnonnted in place on a door and the knob and spindle inserted. The spindle is then half revolved, and the lock is attached on the inside of the'door.

If the lock is now fastened in position, 4the spindle cannot be detached uand will adjust itself to different thicknesses of doors.

The object of this lock is mainly to furnish a combined latch and lock for cupboard and clothes-press use, but it can also be modelled to make it a general builders lock.

The latches and locks in the market are not` cornplete for inside-door use, and there is therefore a want 3. The combination of yoke L N Y with lever-arm A B F, when arranged to support the spring in the chord-line E S w.

4. The adjustable keeper, consisting of the plates 'H and I, constructed and arranged as herein set forth.

THEQPHILUS WEAVER.

Witnesses:

J. W. MOFFITT, F. W. HAAs. 

